This liquid crystal aquarium thermometer sticker is used to measure the temperature of fish tanks. It is made of PET material and has a measuring range of 10-40 degrees. The thermometer changes its color according to the surrounding temperature, making it easy to monitor the water temperature. It is easy to use, just peel off the transparent protective film and attach it to the outer wall of the aquarium. The product is suitable for use in fish tanks, DIY beer and wine barrels, glass containers, greenhouses, animal terrariums, and any type of pet can.